Principal Mechanical Engineer (Wastewater)
Principal Mechanical Engineer (Wastewater)

Principal Mechanical Engineer (Wastewater)

Manchester Full-Time 43200 - 72000 £ / year (est.) Home office (partial)
Go Premium
C

At a Glance

  • Tasks: Lead mechanical design for innovative water sector projects, ensuring compliance and quality.
  • Company: Join Costain, a leader in smart infrastructure solutions across the UK's energy and water sectors.
  • Benefits: Enjoy flexible working options and a supportive environment focused on wellbeing.
  • Why this job: Make a real impact in a growing sector while developing your engineering skills and career.
  • Qualifications: Degree in Mechanical Engineering or related field; experience in water treatment preferred.
  • Other info: Opportunity to work with blue chip clients and contribute to essential national projects.

The predicted salary is between 43200 - 72000 £ per year.

Job Description

Job Description

As our Principal Mechanical Engineer, you will deliver Mechanical Design & Engineering Services to water sector projects.

We work with customers as a primary provider of engineering support through ECI and FEED phases to take their project through to detailed design and construction.

Work will be located at Costain Offices at Aviator Way, Manchester, with a blended approach to flexible and home working to support wellbeing. We welcome applicants from candidates with experience of working in the water sector to support interdisciplinary learning and on-site delivery.

This is a great opportunity to establish or develop a career in a technically challenging and highly rewarding growing sector which will support the UK's water sector.

#LI-MR1

Responsibilities

  • To ensure compliance with Company & Client Policy with respect to water sector requirements.
  • To complete specific design tasks as delegated by the Project Discipline Engineer or Engineering Manager as appropriate.
  • To ensure work packs are delivered in timely and cost effective manner and in line with Company & Clients Project requirements and applicable Company & Client Codes and Standards. Where task forces are mobilised the team members are to be selected through the SQEP process and be familiar in the appropriate field of work.
  • To ensure well maintained Quality Assurance, auditable records, and technical files in line with CDM requirements.To ensure smooth and efficient liaison with Other Associated Partners and disciplines as required

Qualifications

Essential;

  • Specific knowledge and experience within their specialist field and discipline. (i.e.SQEP'd – Suitably Qualified Experienced Person)
  • Capable of carrying out Lead Mechanical Engineers roles on a project or group of water projects and may support the career development of fellow engineers.
  • Significant and proven experience in Mechanical discipline or a closely related one.
  • Proficiency in the delivery of engineering design across a number of work categories.
  • An appropriate Degree, HNC, HND or equivalent in Mechanical Engineering or related discipline.

Experience in one or more of the following specialist mechanical engineering fields:

  • Water treatment
  • Waste water treatment
  • Biosolids/sludge treatment
  • Pumping systems
  • Chemical storage and dosing
  • Asset condition surveys and reports

Desirable;

Experience with the following mechanical engineering and design deliverables and activities:

  • Process Flow Diagrams
  • Plant Layout
  • Equipment Specifications and Datasheets
  • Pumping system calculations
  • Chartered Mechanical Engineer

About Us

Costain helps to improve people's lives with integrated, leading edge, smart infrastructure solutions across the UK's energy, water, transportation and defence markets. We help our clients improve their business performance by increasing capacity, improving customer service, safeguarding security, enhancing resilience, decarbonising and delivering increased efficiency. Our vision is to be the UK's leading smart infrastructure solutions company. We will achieve this by focusing on blue chip clients whose major spending plans are underpinned by strategic national needs, regulatory commitments, legislation or essential performance requirements. We offer our clients leading edge solutions that are digitally optimised through the following five services which cover the whole lifecycle of their assets: future-shaping strategic consultancy; consultancy and advisory; digital technology solutions; asset optimisation and complex programme delivery. Our culture and values underpin everything we do.

Costain appreciate the time and effort taken when applying for one of our positions but, due to the high volume of responses, we are unable to provide individual feedback on candidates at application phase.

We do share individual feedback following an interview.

A Disability Confident employer will generally offer an interview to any applicant that disclose they have a disability and meets the minimum criteria for the job as defined by the employer.

It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people.

For more details please go to the Disability Confident website:
https://www.gov.uk/government/collections/disability-confident-campaign

Principal Mechanical Engineer (Wastewater) employer: Costain

Costain is an exceptional employer, offering a dynamic work environment at our Aviator Way office in Manchester, where flexibility and home working are embraced to support employee wellbeing. We prioritise professional growth through interdisciplinary learning opportunities in the water sector, ensuring that our team members are equipped to tackle technically challenging projects while contributing to vital infrastructure improvements across the UK.
C

Contact Detail:

Costain Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Principal Mechanical Engineer (Wastewater)

✨Tip Number 1

Familiarise yourself with the latest trends and technologies in the water sector. Understanding current innovations in wastewater treatment and mechanical engineering will not only enhance your knowledge but also demonstrate your commitment to the field during discussions.

✨Tip Number 2

Network with professionals already working in the water sector. Attend industry events, webinars, or local meetups to connect with potential colleagues and learn about their experiences. This can provide valuable insights and may even lead to referrals.

✨Tip Number 3

Prepare to discuss specific projects you've worked on that relate to the responsibilities of a Principal Mechanical Engineer. Be ready to explain your role, the challenges faced, and how you contributed to successful outcomes, as this will showcase your practical experience.

✨Tip Number 4

Research Costain's recent projects and initiatives in the water sector. Being knowledgeable about their work will allow you to tailor your conversations and show genuine interest in their operations, making you a more appealing candidate.

We think you need these skills to ace Principal Mechanical Engineer (Wastewater)

Mechanical Design Engineering
Water Treatment Systems
Wastewater Treatment Processes
Biosolids and Sludge Management
Pumping System Design and Calculations
Chemical Storage and Dosing Systems
Process Flow Diagrams (PFDs)
Plant Layout Design
Equipment Specifications and Datasheets
Asset Condition Surveys
Project Management
Quality Assurance and Compliance
Interdisciplinary Collaboration
Technical Documentation and Reporting
Chartered Engineer Status

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your specific experience in mechanical engineering, particularly within the water sector. Emphasise any relevant projects you've worked on, especially those involving water treatment or pumping systems.

Craft a Strong Cover Letter: In your cover letter, express your enthusiasm for the role and the company. Mention how your skills align with the responsibilities outlined in the job description, and provide examples of your past work that demonstrate your capability as a Principal Mechanical Engineer.

Highlight Relevant Qualifications: Clearly list your qualifications, such as your degree in Mechanical Engineering or related fields. If you are a Chartered Mechanical Engineer, make sure to mention this prominently, as it is a desirable qualification for the role.

Showcase Interdisciplinary Experience: Since the role involves working with other disciplines, highlight any experience you have in interdisciplinary projects. This could include collaboration with civil engineers, environmental specialists, or project managers, showcasing your ability to work effectively in a team.

How to prepare for a job interview at Costain

✨Showcase Your Technical Expertise

As a Principal Mechanical Engineer, it's crucial to demonstrate your specific knowledge and experience in mechanical engineering, particularly in the water sector. Be prepared to discuss your previous projects, focusing on your role and the technical challenges you overcame.

✨Understand the Company’s Values

Familiarise yourself with Costain's mission and values. During the interview, align your answers to reflect how your personal values and work ethic resonate with their commitment to improving lives through smart infrastructure solutions.

✨Prepare for Scenario-Based Questions

Expect questions that assess your problem-solving skills and ability to work under pressure. Prepare examples from your past experiences where you successfully managed project timelines, collaborated with teams, or navigated complex engineering challenges.

✨Ask Insightful Questions

At the end of the interview, take the opportunity to ask thoughtful questions about the team dynamics, ongoing projects, or the company's approach to innovation in the water sector. This shows your genuine interest in the role and helps you gauge if the company is the right fit for you.

Principal Mechanical Engineer (Wastewater)
Costain
Go Premium

Land your dream job quicker with Premium

You’re marked as a top applicant with our partner companies
Individual CV and cover letter feedback including tailoring to specific job roles
Be among the first applications for new jobs with our AI application
1:1 support and career advice from our career coaches
Go Premium

Money-back if you don't land a job in 6-months

C
  • Principal Mechanical Engineer (Wastewater)

    Manchester
    Full-Time
    43200 - 72000 £ / year (est.)

    Application deadline: 2027-08-27

  • C

    Costain

Similar positions in other companies
UK’s top job board for Gen Z
discover-jobs-cta
Discover now
>